Engine.



- PATENTED MAR. 3, l903.

P. F. MOMONEGAL. v

ENGINE.

APPLICATION FILED MAR. 16, 1902.

N0 MODEL.

3 SHEBTS-SHEET 1.

WITNESSES Pekr/mrmzw a ATTORNEYS No. 721,908. PAT NTED MARJ3, 1903.

P. E. MQMONBGAL.

ENGINE.

APPLIOA'IIION EILED'M-AE. 18, 1902. no MODEL. 1 s SHEETS-SHEET 2.

1 nnams PETERS co, FHUYO-LITKQ. WASHINGTON n I:

PATENTED MAR. 3, 1908. 1

P. F. MGMONEGAL-V ENGINE.

APPLICATION IILED MAB.'1B, 1902.

3 slums-SHEET 3.

N0 MODEL, 7

mvsuron Perv/ 31 2021 id M ATTORNEYS UNITED STATES PATENT OFFICE.

PETER F. MOMONEGAL, OF JERSEY CITY, NEW JERSEY.

ENGINE.

SPECIFICATION forming part of Letters Patent NO. 721,908, dated March 3,1903.

Application filed March 18,1902. Serial No. 98,728. (No model.)

To aZZ whom it may concern.-

Be it known that 1, PETER F. MCMONEGAL, a citizen of the United States,residing at J ersey City, in the county of Hudson and State of NewJersey, have invented certain new and useful Improvements in RotaryEngines, of which the following is a full and complete specification,such as will enable those skilled in the art to which it appertains tomake and use the same.

The object of this invention is to provide an improved rotary enginewhich is simple in construction and operation and which possesses amaximum of power and efficiency in proportion to the amount of steam ormotive agent employed.

The invention is fully disclosed in the following specification, ofwhich the accompanying drawings form a part, in which the separate partsof my improvement are designated by the same reference characters ineach of the views, and in which- Figure l is a back view of my improvedrotary engine; Fig. 2, a side view thereof; Fig. 3, a section on theline 3 3 of Fig. 1; Fig. 4, a section on the line 4 4 of Fig. 1; Fig. 5,a back view with the back plate and pistoncylinder removed; Fig. 6,.ahorizontal and longitudinal section through the piston-cylinder, Fig. 7,a section at right angles to Fig. 6; Fig. 8, a transverse section on theline 8 8 of Fig. 6; Fig. 9, a perspective view of the piston removedfrom the cylinder, and Fig. 10 a diagrammatic view showing differentpositions of the crank-disk which I employ and illustrating thepositions of the crank in the operation of the machine.

In the practice of my invention I provide a cylindrical casinga, havinga base a which may be bolted to any suitable support, as shown at a andthe cylindrical casing is open at the back and provided with an annularflange or rim a, to which is bolted a back plate a which forms a partofthe casing a and which when in position completes said casing.

The casing a is provided at the front side thereof and centrally thereofwith a tubular bearing a, through which passes the main power-shaft b,and said casing or the back plate thereof is provided with a transversepiston-cylinder c, the interior length of which is preferably slightlyless than the interior diameter of the casing a, and said pistoncylinderis in communication with the casing a and with the back plate a by meansof a slot or opening 0 formed both in the back plate a and in saidcylinder, and said slot or opening is slightly less in length than theinterior length of the cylinder 0, and the connection between saidcylinder 0 and the opening in the back plate 0, of the casing a is madeby means of a longitudinal neck portion 0 formed on the inner side ofsaid cylinder.

Within the casing a and rigidly secured to ably extended into thecentral portion of the cylinder 6, which, as shown in Figs. 3, 4, and 6,extends only through the neck of the cylinder, but which may extend intothe central portion of the piston, if desired, as shown in Fig. 8.

Oountersunk in the outer or back side of the head (1 and eccentric tothe axis thereof is a crank-disk f, provided with a crank-pin f and theouter surface of the crank-diskf is flush with the outer back side ofthe head (1, and the crank-pinf enters the crank-pin opening .e in theneck 6 of the cylinder 6, as clearly shown in Figs. 3, 4, 6, ands. Thehead 01- of the power-shaft b is provided at its front side with twoannular chambers g and g whichare arranged concentrically, and the innerannular chamber 9 is continuous or forms a complete circle, while theouter concentric chamber g is complete or forms a complete circle at theinner side of said head, but is divided centrally by an annularpartition 9 so as to form two segmental chambers g and as shown in Fig.5, said segmental chambers g and 9 being separated by partitions g andcommunication with the annular chamber 9 at 9 as shown in Fig. 4, andthe annular partition g is provided with a port or passage 9 by which itis adapted to communicate with the annular chamber g at the front sideof the head d. I have also shown at 71. in Fig. 3 a steam supply pipewhich communicates with the annular chamber g through the front plate ofthe casing a, and at 72. a steamexhaust which communicates with theannular chamber 9 through said front plate of the casing a.

The operation will be readily understood from the foregoing description,taken in connection with the accompanying drawings and the followingstatement thereof: Suppose the parts of the apparatus to be in theposition shown in Figs. 3, 4, and 5. If steam be admitted to the pipe h,it will enter the annular chamber 9 and will pass from said chamberthrough the port or passage 9 into the supplemental segmental chamber gfrom which it passes directly into the piston-cylinder at the right-handend thereof, as shown in Fig. 4, and the piston e will be forced towardthe opposite end of said cylinder. In this operation the head d of theshaft 1) is turned one-half a revolution and the crankdisk f turns insaid head and moves diametrically across the back face of said head.

Suppose the parts to be in the position shown in Fig. 5. The position ofthe crankdisk and crank-pin at the extreme limit of the left-handmovement of said pin is shown at s in Fig. 10, while the intermediateposition of the crank-diskfand crank-pin f between the points shown inFig. 5 ands in Fig. 10 is shown at t in Fig. 10, and as the crank-pinmoves transversely of the head (1, as before described, the said head isalso turned, and when the said crank-pin reaches the extreme limit ofits movement to the left the head continues to turn and the crank-pinstarts back on its right-hand movement and at this time a new supply ofsteam enters the chamber 9 and passes into the left-hand end of thecylinder 0 and at the same time the steam is exhausted from theright-hand end of the cylinder through the port or passage into thechamber 9 and out through the pipe 71?, and the piston 6 moves to theright and the crank-pin f completes its movement to the right, and inthis operation the said crank-pin and crank-disk assume the intermediateposition shownat u and 1; in Fig. 10 until it reaches the extrememovement to the right, which extreme movement is not shown, the extrememovement to the right, however, being the exact opposite of that shownat s, in which the crank-pinf would be at the extreme right of thecrank-diskf, or, in other words, the crank-pin f would be at the rightof the diskf, and it will be understood that this movement of the partsis repeated as long as the machine is in operation, the steam beingalternately admitted into and exhausted from the opposite ends of thecylinder 0.

The entire device is simple in construction and operation andparticularly adapted to accomplish the result for which it is intended,and my invention is not limited to the exact form of the parts hereinshown and described and the method for connecting the same, and Ireserve the right to make all such alterations therein and modificationsthereof as fairly come within the scope of my invention.

Having fully described my invention, what I claim as new, and desire tosecure by Letters Patent, is-

1. A rotary engine comprising a cylindrical casing provided at one sidewith a removable plate, a cylindrical head mounted in said casing andadapted to turn therein, a transverse piston-cylinder connected withsaid removable plate and provided with a longitudinal neck which openstherethrough into said casing, a piston mounted in said cylinder andprovided with a neck which fits in and is adapted to move in the neck ofsaid cylinder, a crank-disk revolubly mounted in said head eccentric tothe center thereof and provided at one side with a crank-pin which fitsin the neck of the piston, a power-shaft which passes through the sideof the casing opposite the removable plate and is secured to said headand means for alternately admitting and exhausting steam through saidhead and to and from the opposite ends of said cylinder through saidhead, substantially as shown and described.

2. A rotary engine comprising a cylindrical casing provided at one sidewith a removable plate, a cylindrical head mounted in said casing andadapted to turn therein, a shaft which passes through the side of said oing, opposite said removable plate and L secured to said head, apiston-cylinder connected transversely with the removable plate andprovided with a longitudinal neck which communicates with said casingthrough said plate, a piston mounted in said cylinder and provided witha neck adapted to move in the neck of the cylinder, a crank-diskeccentrically mounted in said head and adapted to turn therein andprovided at one side with a crank-pin which fits in the neck of thepiston, two annular chambers formed in the side of said head oppositesaid removable plate and concentrically arranged, two segmental chambersformed in the side of said head adjacent to said removable plate, one ofwhich is in communication with the inner annular chamber at the oppositeside and the other with the outer annular chamber at said side, saidsegmental chambers being also in communication with the opposite ends ofthe cylinder, and steam supply and exhaust pipes communicatingrespectively with the outer annular chamber and the inner annularchamber in the side of said head opposite the cylinder, substantially asshown and described.

3. A rotary engine comprising a cylindrical casing provided at one sidewith a removable plate, a transverse piston-cylinder connected centrallywith said plate and provided with a l ing steam through said head and toand from longitudinal neck which communicates with the opposite ends ofsaid cylinder through said casing through said plate, apiston mountsaidhead, substantially as shown and de- 15 ed in said cylinder and providedwith a neck scribed.

5 adapted to move in the neck of the cylinder, In testimony that I claimthe foregoing as a cylindrical head mounted in said casing, my inventionI have signed my name, in presand adapted to turn therein, acrank-diskrevence of the subscribing witnesses, this 17th olubly mounted in theside of said head adjaday of March, 1902.

cent said removable plate and adapted to turn PETER F. MCMONEGAL. 10therein and provided at one side with a crank- Witnesses:

pin which fits in the neck of the piston, and T. A. STEWART,

means for alternately supplying and exhaust- F. F. TELLER.

